1 | /* |
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2 | * $Source: /afs/dev.mit.edu/source/repository/athena/bin/mon/mon.c,v $ |
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3 | * $Author: dgg $ |
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4 | * $Locker: $ |
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5 | * $Header: /afs/dev.mit.edu/source/repository/athena/bin/mon/mon.c,v 1.1 1984-12-13 12:00:58 dgg Exp $ |
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6 | */ |
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7 | |
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8 | #ifndef lint |
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9 | static char *rcsid_mon_c = "$Header: /afs/dev.mit.edu/source/repository/athena/bin/mon/mon.c,v 1.1 1984-12-13 12:00:58 dgg Exp $"; |
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10 | #endif lint |
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11 | |
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12 | /* |
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13 | * M O N . C |
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14 | * |
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15 | * A program to moniter system activity. |
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16 | * Rework of earlier mon program. 17 Aug 84 - Phillip Dykstra |
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17 | * |
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18 | */ |
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19 | |
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20 | #include "mon.h" |
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21 | #include <curses.h> |
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22 | #include <signal.h> |
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23 | |
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24 | struct sgttyb ttyb; |
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25 | int done(); |
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26 | |
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27 | /* |
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28 | * The namelist array. Uses to get the kernal variables needed |
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29 | * by all the MON routines. The order of this list MUST correspond |
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30 | * to the order of the definitions in mon.h |
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31 | */ |
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32 | struct nlist namelist[] = { |
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33 | { "_dk_busy" }, |
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34 | { "_dk_mspw" }, |
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35 | { "_hz" }, |
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36 | { "_cp_time" }, |
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37 | { "_rate" }, |
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38 | { "_total" }, |
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39 | { "_deficit" }, |
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40 | { "_dk_xfer" }, |
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41 | { "_mbdinit" }, |
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42 | { "_ubdinit" }, |
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43 | { "_ifnet" }, |
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44 | { "_dk_time" }, |
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45 | { "_dk_wds" }, |
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46 | { "_dk_seek" }, |
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47 | { "_tk_nin" }, |
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48 | { "_tk_nout" }, |
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49 | { "_avenrun" }, |
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50 | { "_cp2_time" }, /* 2nd CPU stats */ |
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51 | { "_slavestart" }, /* Used to detect 2nd CPU */ |
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52 | { 0 } |
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53 | }; |
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54 | |
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55 | main(argc,argv) |
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56 | int argc; |
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57 | char *argv[]; |
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58 | { |
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59 | register i; |
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60 | double f1, f2; |
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61 | extern char *ctime(); |
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62 | |
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63 | /* |
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64 | * fill the namelist and open /dev/kmem |
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65 | */ |
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66 | nlist("/vmunix", namelist); |
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67 | if(namelist[X_DK_BUSY].n_type == 0) { |
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68 | printf("dk_busy not found in /vmunix namelist\n"); |
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69 | exit(1); |
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70 | } |
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71 | kmem = open("/dev/kmem", 0); |
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72 | if(kmem < 0) { |
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73 | printf("cannot open /dev/kmem\n"); |
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74 | exit(1); |
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75 | } |
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76 | if(argc > 1) |
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77 | intv = (atoi(argv[1])); |
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78 | else intv = 1; |
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79 | |
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80 | /* |
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81 | * do all things that need to be done only once |
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82 | */ |
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83 | lseek(kmem, (long)namelist[X_DK_MSPW].n_value, 0); |
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84 | read(kmem, s.dk_mspw, sizeof s.dk_mspw); |
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85 | lseek(kmem, (long)namelist[X_HZ].n_value, 0); |
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86 | read(kmem, &hz, sizeof hz); |
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87 | read_names(); |
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88 | dualcpu = 0; |
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89 | if (namelist[X_SLAVESTART].n_type) |
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90 | dualcpu++; |
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91 | /* |
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92 | * monitor parameters forever |
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93 | */ |
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94 | worker(); |
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95 | /* NOTREACHED */ |
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96 | } |
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97 | |
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98 | char obuf[BUFSIZ]; /* Output buffer */ |
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99 | |
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100 | worker() |
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101 | { |
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102 | long clock; |
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103 | struct timeval tintv; |
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104 | int i, tin; |
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105 | |
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106 | /* set up signals */ |
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107 | signal(SIGINT, done); |
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108 | signal(SIGQUIT, done); |
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109 | |
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110 | /* set CBREAK mode with no buffering on stdin */ |
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111 | setbuf(stdin, 0); |
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112 | setbuf(stdout, obuf); |
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113 | ioctl(0, TIOCGETP, &ttyb); |
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114 | ttyb.sg_flags |= CBREAK; |
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115 | ioctl(fileno(stdin), TIOCSETP, (char *)&ttyb); |
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116 | |
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117 | tintv.tv_sec = intv; |
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118 | tintv.tv_usec = 0; |
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119 | initscr(); /* init curses package */ |
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120 | nifinit(); /* get initial net interfaces data */ |
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121 | dispinit(); /* initialize display */ |
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122 | for(;;){ |
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123 | vm(); |
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124 | io(); |
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125 | nifupdate(); |
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126 | /* get load average */ |
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127 | lseek(kmem, (long)namelist[LOADAV].n_value, 0); |
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128 | read(kmem, &loadavg[0], sizeof loadavg); |
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129 | mvprintw(0,13,"%4.2f %4.2f %4.2f %4.2f", loadavg[3], loadavg[0], loadavg[1], loadavg[2]); |
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130 | time(&clock); |
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131 | mvprintw(0,40,ctime(&clock)); |
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132 | dispupdate(); |
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133 | mvprintw(23, 0, "CMD> "); |
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134 | refresh(); |
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135 | tin = 1; |
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136 | i = select(2, &tin, (int *)0, (int *)0, &tintv); |
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137 | if (i && tin) { |
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138 | i = getchar(); |
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139 | if (i == 12) |
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140 | dispinit(); |
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141 | else if (i == 'q') |
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142 | done(); |
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143 | } |
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144 | } |
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145 | } |
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146 | |
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147 | /* |
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148 | * DONE - put the term back in non CBREAK mode and exit. |
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149 | */ |
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150 | done() |
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151 | { |
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152 | ioctl(0, TIOCGETP, &ttyb); |
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153 | ttyb.sg_flags &= ~CBREAK; |
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154 | ioctl(fileno(stdin), TIOCSETP, (char *)&ttyb); |
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155 | mvprintw(23,0,"\n"); |
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156 | refresh(); |
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157 | exit(1); |
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158 | } |
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